#include <iostream>
#include <vector>

using Matrix = std::vector<std::vector<int>>;

using funcPtr = void(int,int);

template<typename T = int>
T add(T a,T b)
{
    return a + b;
}

int main()
{
    // std::vector<std::vector<int>> v;
    funcPtr p;
    return 0;
}